Clutch construction.



P. EVANS.

CLUTCH CONSTRUCTION. APPLICATION FILED uns, 19-12.

Patented Sept. 30, 1913. v

3 SHEETS-SHEET 1.

ij 53 JS H-o-rrzqyg.-

P. EVANS.

CLUTCH CONSTRUCTION.

APPLIGATION FILED MAYB. 1912,

1,074,500. Patented Sept. 30, 1913.

, 3 SHEETS-SHEET 2.

P. EVANS.

CLUTCH CONSTRUCTION.

- APPLGATION FILED Mns, 1912.

1,074,500. Patented Sept.30,1913.

3 SHEETS-SHEET 3.

' UNITED sfrarns rarENT oFFIoE. fromm. 'armatarnaaarierarmsrnvm. i cruwdnieommfcrma.

inviano.

tion, of whichcthe 'following is'aspec'ca-j,

'One objectof my invention Yis 'A .to so `m'a'ke andz'ass'cmbie the parts-fof a friction clutch of 'thefmultipl-ate type as'to materially reduce the costf its construction and in* creasethele'ase' and convenience of its manufacture.

-I further desire to providealpl'ate clutch with an #internal *drum andv supporting structure which shall be built up instead of being made of a single'casting or forging; the various 'parts @being ofL novel arrangement in order to permit of their economical manufacture in lar-ge quantities.

These objects and other advantageous ends I secure as hereinafter set forth, referanda vertical section of that form of inner` in that form of clutch shown in Fig. 1; Figs.

4 land 5 are respectively a front elevation plate carrying drum employed in the clutch shown in Fig. 2; Figs. 6 and 7 are respectively a vertical section and a front elevation of the-core hub belonging to that form of clutch shown in Fig. l; and Figs. 8 and 9 are respectively a vertical section and a ,front elevation of that form of core hub shown in Fig. 2..

In the above drawings, 1 represents the inclosiuo' casing of a ,clutch of well known form, having an end cover plate 2 which, by any of the devices Well known in this art, is usually connected to some source of power such as an engine. In the case illustratedy the casing 1 has projecting from its interior cylindrical surface a series of parallel ribs forming keys engaged by a series of annular plates 4 each provided 4With an annular 'recess 5 of wedge shaped form designed to coact with the walls of a similar recess 6 belonging to the plates 7 of a second series. These two sets of plates or annular` structures alternate with each other within the 'series engages the cover 2 'wliiiethe plate 'at theoppositeen'd threo'fis engaged by a pressure l 'as' to at la l'tiines 'forcetllep 'ates ofth'etwo lat'e 8-a`cted on b a 'spring 9 so series together, except when drawn 'a'way from-'them b 'means-of'anfactuatin'g member'lO cbiitro ledin'the usual manner.

The present 'invention has'to do with the4 structure for transmitting power from the plates 7 to the shaft-11, and such'stru'cture includesacore 1hub whichon'th'e one hand is connected to the shaft-11fthrough a universal joint formed by an internally toothed member 113 *engaged by'lthe teeth of a hub 14 fixed to said shaft,..and whichon the other Ahand is connected-to the plates`7 by a Y drum provided 'o'n its external'surface with a series of parallelribs Ilforming keys.

' In the case shown in 'Fig-aine Body/'of the vdrum 'consistsfof a long ieylindrical part 15 and a shorter cylindrical part 16 both inwardly fianged at their adjacent ends and spot -welded or otherwiserigidly and permanently 'connected together. The cylindrical body portion ofthe core hub 12 is of proper diameter to enter the opening defined by the inner edges of these two flanges and its ilangeportion 12*L is designed to fit against and lie parallel with the outer face of the flange of the part 15. Bolts 17 rigidly connect the part 13 of the universal coupling or joint, the core hub and the composite drum struct-ure 15--16. Mounted on said drum structure is asecond structure have formed in it a series of outwardly pro-f jecting ribs or teeth so spaced and so formed as to fit into the c'orrugations` of the sections 18 as shown in Figs. 1 and 3.l

In the clutch shown in Fig. 2 the supporting drum structure 15416 h'as its in'' ternal flanges not onlyspot welded together ing; two series of but directly bolted to the externally rojecting -ange 2O of a core' hub 21 fixe directly to the' driven shaft 11 and it is'obvious that if desired, said drum structure may be corrugated or plain in order to properl receive the tooth sections 18 on which t e plates 7 of the clutch are mounted as heretofore described.

In constructing the parts of my invention the core hubs are preferably made of pressed steel, while the two parts 15 and 16 of the main drumstructure, as well as the sections 18 forming the plate en aging teeth, are preferably made of presse sheet' metal.'

As is obvious, the operation of connecting together the parts 15 and 16 of the main drum structure and of thereafter mounting thereon the toothed sections 18, may be easily and inexpensively performed as may also the connecting of the main drum structure to the core hub.

I claim- 1. The combination in a clutch of a casplates therein of which those of one series are operatively connected to said casing; a drum structure inside of the plates and consisting of two rigidly connected, structurally lndependent parts; tooth sections mounted on the drum structure and operatively engaging the plates of the second series; said tooth sections being structurally independent of the drum structure. i

2. The combination in a clutch of a core hub; a' main drum structure consisting of two inwardly flanged rigidly connected cylindrical sections mounted on said core hub; a series of tooth sections mounted on said drum structure; a series of plates operatively connected to said tooth sections; a second series of plates cooperating with the plates of the first series; and means for transmitting the power toward or from the plates of the second series.

3. A plate supportmg structure for a clutch conslsting of an externally flanged' hub; two internally flanged cylindrical sections having their fianges rigidly connected y together and attached to the flange of the hub; and a series of structurally independent tooth sections rigidly connected to both of the cylindrical sections.

In testimony whereof, I have signed my name to this speciiication, in the presence of two subscribing witnesses.

y POWELL EVANS.

Witnesses:

WILLIAM E. BRADLEY, J os. H. KLEIN. 

